teeth是可数名词吗

teeth是tooth的复数形式。牙齿是以个体存在的，所以是可数名词，

例句I need to have two teeth filled. 我有两颗牙要补。

The dentist may decide that the wisdom teeth need to be extracted.

牙医可能会认为智齿需要拔掉。

They took a plaster cast of the teeth for identification purposes.

他们做了这副牙的石膏模型作鉴别之用。

It is a proven fact that fluoride strengthens growing teeth.

氟化物可以强化生长中的牙齿，这是已证明的事实。

He laughed, revealing a line of white teeth.

他笑了起来，露出一排洁白的牙齿。

I\'ve had one of my teeth crowned.

我的一颗牙齿镶了假齿冠。

Fruit juices can be harmful to children\'s teeth.

果汁可能损坏儿童的牙齿。